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Childhood Adenotonsillectomy Trial

Name Label Folder
nremepbp
Total duration of sleep in NREM sleep in supine position from type I polysomnography
Total duration of sleep in NREM sleep in supine position from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
nremepop
Total duration of sleep in NREM sleep in non-supine position from type I polysomnography
Total duration of sleep in NREM sleep in non-supine position from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
nsupinep
Percentage duration of sleep in non-supine position from type I polysomnography
Percentage duration of sleep in non-supine position from type I polysomnography

[100*(number of minutes of sleep in non-supine body position) / (Total Sleep Time (TST))]

Sleep Monitoring/Polysomnography/Sleep Architecture
pcstah3d
Percentage duration of sleep associated with apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or with arousal from type I polysomnography
Percentage duration of sleep associated with apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or with arousal from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
pcstahar
Percentage duration of sleep associated with apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with no oxygen desaturation threshold used or with arousal from type I polysomnography
Percentage duration of sleep associated with apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with no oxygen desaturation threshold used or with arousal from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
pcstahda
Percentage duration of sleep associated with apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation and with or without arousal from type I polysomnography
Percentage duration of sleep associated with apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation and with or without arousal from type I polysomnography

Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the American Academy of Sleep Medicine (AASM) 2007 Manual (pediatric). [Iber C et al. The AASM manual for the scoring of sleep and associated events: rules, terminology and technical specifications. Vol. 1. Westchester, IL: American Academy of Sleep Medicine, 2007]

Search for all AHI variables consistent with the clinical guidelines within this dataset

Sleep Monitoring/Polysomnography/Sleep Architecture
remepbp
Total duration of sleep in REM sleep in supine position from type I polysomnography
Total duration of sleep in REM sleep in supine position from type I polysomnography

Total time in rapid eye movement sleep (REM) with supine body position

Sleep Monitoring/Polysomnography/Sleep Architecture
remepop
Total duration of sleep in REM sleep in non-supine position from type I polysomnography
Total duration of sleep in REM sleep in non-supine position from type I polysomnography

Total time in rapid eye movement sleep (REM) with non-supine body position

Sleep Monitoring/Polysomnography/Sleep Architecture
slplatp
Sleep Latency: the interval between lights-out/in-bed time and sleep onset time from type I polysomnography
Sleep Latency: the interval between lights-out/in-bed time and sleep onset time from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
slpprdp
Total Sleep Duration: the interval between sleep onset time and lights on/out-bed time while the participant is asleep from type I polysomnography
Total Sleep Duration: the interval between sleep onset time and lights on/out-bed time while the participant is asleep from type I polysomnography

Conventionally, this would be called total sleep time (TST) (i.e. total time spent in stage 1 or greater).

Sleep Monitoring/Polysomnography/Sleep Architecture
supinep
Percentage duration of sleep in supine position from type I polysomnography
Percentage duration of sleep in supine position from type I polysomnography

Percent of sleep time in supine body position [100*(number of minutes of sleep in supine body position) / (Total Sleep Time (TST))]

Sleep Monitoring/Polysomnography/Sleep Architecture
timebedp
Total period of bed (in-bed) from type I polysomnography
Total period of bed (in-bed) from type I polysomnography

Time from lights out to lights on

Sleep Monitoring/Polysomnography/Sleep Architecture
timerem
Total Sleep Duration (REM): the interval between sleep onset time and lights on/out-bed time while the participant is in REM sleep from type I polysomnography
Total Sleep Duration (REM): the interval between sleep onset time and lights on/out-bed time while the participant is in REM sleep from type I polysomnography

Total time scored as rapid eye movement sleep (REM)

Sleep Monitoring/Polysomnography/Sleep Architecture
timeremp
Percentage of REM sleep among total sleep duration from type I polysomnography
Percentage of REM sleep among total sleep duration from type I polysomnography

Conventionally, total sleep duration would be called total sleep time (TST).

Percent of sleep time in rapid eye movement sleep (REM) [100*(number of minutes scored as rapid eye movement sleep (REM)) / (Total Sleep Time (TST))] * 100

Sleep Monitoring/Polysomnography/Sleep Architecture
times34p
Percentage duration of sleep in stage 3/4 sleep from type I polysomnography
Percentage duration of sleep in stage 3/4 sleep from type I polysomnography

Percent of sleep time in stage 3-4 [100*(number of minutes scored as stage 3-4) / (Total Sleep Time (TST))]

Sleep Monitoring/Polysomnography/Sleep Architecture
timest1
Total duration of sleep in stage 1 sleep from type I polysomnography
Total duration of sleep in stage 1 sleep from type I polysomnography

Total time scored as stage 1 rounded to nearest minute

Sleep Monitoring/Polysomnography/Sleep Architecture
timest1p
Percentage of stage 1 sleep among total sleep duration from type I polysomnography
Percentage of stage 1 sleep among total sleep duration from type I polysomnography

Conventionally, total sleep duration would be called total sleep time (TST).

Percent of sleep time in stage 1 [100*(number of minutes scored as stage 1) / (Total Sleep Time (TST))]

Sleep Monitoring/Polysomnography/Sleep Architecture
timest2
Total duration of sleep in stage 2 sleep from type I polysomnography
Total duration of sleep in stage 2 sleep from type I polysomnography

Total time scored as stage 2 rounded to nearest minute

Sleep Monitoring/Polysomnography/Sleep Architecture
timest2p
Percentage of stage 2 sleep among total sleep duration from type I polysomnography
Percentage of stage 2 sleep among total sleep duration from type I polysomnography

Conventionally, total sleep duration would be called total sleep time (TST).

Percent of sleep time in stage 2 [100*(number of minutes scored as stage 2) / (Total Sleep Time (TST))]

Sleep Monitoring/Polysomnography/Sleep Architecture
timest34
Total duration of sleep in stage 3/4 sleep from type I polysomnography
Total duration of sleep in stage 3/4 sleep from type I polysomnography

Total time scored as stage 3/4 rounded to nearest minute

Sleep Monitoring/Polysomnography/Sleep Architecture
waso
Wake After Sleep Onset: the total duration between sleep onset and lights-on/out-bed time while being awake from type I polysomnography
Wake After Sleep Onset: the total duration between sleep onset and lights-on/out-bed time while being awake from type I polysomnography

Total amount of time spent awake after going to sleep [(time in bed) - (sleep latency) - (Total Sleep Time (TST))]

Sleep Monitoring/Polysomnography/Sleep Architecture
hremt1p
Number of shift (sleep stages shift) from REM sleep to stage 1 sleep per hour of sleep from type I polysomnography
Number of shift (sleep stages shift) from REM sleep to stage 1 sleep per hour of sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
hremt2p
Number of shift (sleep stages shift) from REM sleep to stage 2 sleep per hour of sleep from type I polysomnography
Number of shift (sleep stages shift) from REM sleep to stage 2 sleep per hour of sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
hremt34p
Number of shift (sleep stages shift) from REM sleep to stage 3/4 sleep per hour of sleep from type I polysomnography
Number of shift (sleep stages shift) from REM sleep to stage 3/4 sleep per hour of sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
hslptawp
Number of shift (sleep stages shift) from sleep to awake per hour of sleep from type I polysomnography
Number of shift (sleep stages shift) from sleep to awake per hour of sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
hstg2t1p
Number of shift (sleep stages shift) from stage 2 to stage 1 sleep per hour of sleep from type I polysomnography
Number of shift (sleep stages shift) from stage 2 to stage 1 sleep per hour of sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
hstg342p
Number of shift (sleep stages shift) from stage 3/4 to stage 1/2 sleep per hour of sleep from type I polysomnography
Number of shift (sleep stages shift) from stage 3/4 to stage 1/2 sleep per hour of sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
minremp
Total Sleep Duration (REM): the interval between sleep onset time and lights on/out-bed time while the participant is in REM sleep from type I polysomnography
Total Sleep Duration (REM): the interval between sleep onset time and lights on/out-bed time while the participant is in REM sleep from type I polysomnography

Total time scored as rapid eye movement sleep (REM), rounded to nearest minute (use calculated variable - sleep wake studies screened out)

Sleep Monitoring/Polysomnography/Sleep Architecture
minstg1p
Total duration of sleep in stage 1 sleep from type I polysomnography
Total duration of sleep in stage 1 sleep from type I polysomnography

Total time scored as stage 1, rounded to nearest minute (use calculated variable - sleep wake studies screened out)

Sleep Monitoring/Polysomnography/Sleep Architecture
minstg2p
Total duration of sleep in stage 2 sleep from type I polysomnography
Total duration of sleep in stage 2 sleep from type I polysomnography

Total time scored as stage 2, rounded to nearest minute (use calculated variable - sleep wake studies screened out)

Sleep Monitoring/Polysomnography/Sleep Architecture
mnstg34p
Total duration of sleep in stage 3/4 sleep from type I polysomnography
Total duration of sleep in stage 3/4 sleep from type I polysomnography

Total time scored as stage 3/4, rounded to nearest minute (use calculated variable - sleep wake studies screened out)

Sleep Monitoring/Polysomnography/Sleep Architecture
pctstapn
Percentage duration of sleep associated with apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography
Percentage duration of sleep associated with apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
pctsthyp
Percentage duration of sleep associated with hypopneas with > 50% flow reduction and with no oxygen desaturation threshold used and with or without arousal from type I polysomnography
Percentage duration of sleep associated with hypopneas with > 50% flow reduction and with no oxygen desaturation threshold used and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
rcrdtime
Total recording period
Total recording period

total recording time (minutes)

Sleep Monitoring/Polysomnography/Sleep Architecture
remlaiip
REM Sleep Latency: the interval between the first sleep epoch and REM sleep excluding wake from type I polysomnography
REM Sleep Latency: the interval between the first sleep epoch and REM sleep excluding wake from type I polysomnography

Total sleep time from beginning of sleep to first epoch of rapid eye movement sleep (REM) (excluding wake)

Sleep Monitoring/Polysomnography/Sleep Architecture
remlaip
REM Sleep Latency: the interval between the first sleep epoch and REM sleep including wake from type I polysomnography
REM Sleep Latency: the interval between the first sleep epoch and REM sleep including wake from type I polysomnography

Total time from beginning of sleep to first epoch of rapid eye movement sleep (REM) (data can be inaccurate if scorer has not set sleep onset rule properly in compumedics software)

Sleep Monitoring/Polysomnography/Sleep Architecture
remt1p
Total number of shift (sleep stages shift) from REM sleep to stage 1 sleep from type I polysomnography
Total number of shift (sleep stages shift) from REM sleep to stage 1 sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
remt2p
Total number of shift (sleep stages shift) from REM sleep to stage 2 sleep from type I polysomnography
Total number of shift (sleep stages shift) from REM sleep to stage 2 sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
remt34p
Total number of shift (sleep stages shift) from REM sleep to stage 3/4 sleep from type I polysomnography
Total number of shift (sleep stages shift) from REM sleep to stage 3/4 sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
slpeffp
Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type I polysomnography
Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type I polysomnography

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep (i.e. total sleep time, TST), while in-bed period is the interval between lights off/in-bed time and lights on/out-bed time (i.e. time in bed, TIB).

[(Total Sleep Time (TST)) / (time from sleep onset to morning waking)] * 100 (data can be inaccurate if scorer has not set sleep onset rule properly in compumedics software)

Sleep Monitoring/Polysomnography/Sleep Architecture
slptawp
Total number of shift (sleep stages shift) from sleep to awake from type I polysomnography
Total number of shift (sleep stages shift) from sleep to awake from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
stg2t1p
Total number of shift (sleep stages shift) from stage 2 to stage 1 sleep from type I polysomnography
Total number of shift (sleep stages shift) from stage 2 to stage 1 sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
stg34t2p
Total number of shift (sleep stages shift) from stage 3/4 to stage 1/2 sleep from type I polysomnography
Total number of shift (sleep stages shift) from stage 3/4 to stage 1/2 sleep from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture